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Healthy and inflamed gum models side by side explaining gingivitis versus periodontitis
Last Updated: 8/1/2026

What is the difference between gingivitis and periodontitis?

Gingivitis is earlier and reversible; periodontitis damages bone. Learn how to tell them apart and why timing matters.

What is the difference between gingivitis and periodontitis

Gingivitis is inflammation of the gums, usually from plaque sitting along the gumline. Periodontitis is a more advanced infection that affects the ligament and bone holding teeth in place. Gingivitis can often be reversed; periodontitis usually needs ongoing control rather than a one-time cure.

With gingivitis, gums may look red, feel puffy, or bleed when you brush or floss, but the supporting bone has not been permanently damaged. That is why early care, better daily cleaning, and a professional cleaning can make a visible difference. Periodontitis begins when inflammation moves deeper, creating pockets where bacteria collect below the gumline. As those pockets deepen, bone can shrink away from the tooth and teeth may loosen or shift. A dentist or periodontist checks pocket depths, bleeding, gum recession, mobility, and x-rays to tell which condition is present. The two conditions can feel similar at first, so bleeding gums should not be brushed off just because there is little pain.

Is gum disease reversible?

What are early signs of gum disease?

Key Points

  • Gingivitis affects the gum tissue before permanent bone loss is present.
  • Periodontitis involves deeper pockets and loss of support around teeth.
  • Bleeding gums are common in gingivitis but can also appear with periodontitis.
  • X-rays and gum measurements help separate early inflammation from bone damage.
  • Early treatment gives you the best chance of stopping progression.

What This Means for You

If your gums bleed, schedule a dental exam instead of waiting for pain. The sooner your dentist measures the gums and reviews x-rays, the easier it is to choose the right level of care. Better home care helps both conditions, but periodontitis usually needs deeper professional treatment and maintenance visits.

Related Reading: Is gum disease reversible?  |  What are early signs of gum disease?  |  How is periodontal disease treated?